Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7DEO callsign genealogy
Currently held by FERREE, GARY B
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W7DEO's current licensee, walking backwards.
- Olson, Douglas EWAgranted 2019-07-01cancelled 2019-07-19
Successor callsigns
Callsigns held now by people who previously held W7DEO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7DEO, oldest first.
- FERREE, GARY B MT2007-01-05 → cancelled 2019-02-12
- Olson, Douglas E WA2019-07-19 active